16891-ZW5-000 Fuel Tube E - Overview. The 16891-ZW5-000 Fuel Tube E is a crucial component of Honda marine engine fuel systems. It functions as a dedicated fuel line tube, ensuring the consistent and reliable transfer of fuel within the engine's fuel delivery system. Designed specifically for Honda marine outboard engines, this tube is engineered to support efficient fuel flow, contributing significantly to the engine's operational reliability and performance. Crafted to OEM Honda standards, it